Jackson Labs FireFox, Руководство пользователя

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FireFox Synthesizer User Manual
Auto Calibration
4.1 Introduction
The FireFox Synthesizer does not require frequency calibration, it continuously self-calibrates its
internal OCXO by using the GPS timing receiver.
The FireFox Synthesizer RF output level is factory calibrated, and it is suggested that the user
re-calibrates the RF output once a year to maintain an accurate output level. The unit can
auto-calibrate itself using an external power meter. It contains firmware to drive an Agilent E4418B
or E4419B power meter connected to an Agilent 8482A power sensor.
The following paragraphs describe how to connect the power meter to the FireFox and initiate the
auto-calibration procedure.
4.2 Power Meter Setup
The power meter and FireFox synthesizer have to be warmed-up for one to two hours before the
auto-calibration is started. Plug in, and turn on the power meter, and plug in the FireFox synthesizer
into the wall power outlet.
After warm-up, and prior to starting the auto-calibration, the Agilent power meter needs to be
properly prepared to reduce the calibration error.
4.2.1 Updating the Agilent Sensor Cal Table
The Agilent 8482A sensor has a sensor calibration table placed on its bottom. The data from this
calibration table needs to be entered into, and enabled in the Agilent power meter by hand (it is then
stored inside the power meter). Please follow the Agilent user manual to enter, and enable the sensor
cal table data into the power meter. The power meter is not accurate without properly typing in, and
enabling the calibration table in the power meter.
4.2.2 Using alternate Power Sensors, Power Meters
Other Agilent power sensors may be used if they have at least a -30dBm to +10dBm power sensing
range and 100KHz to 1.7GHz frequency range.